[ So it's the moon, not just night time in general, that caused the wolves to be active? The more you know. ]

Well, I did think it was strange that the moon has been full for a few nights in a row. I didn't know it was related to the issue.

[ They step a little back towards the library, as if expecting him to follow. This new hint is giving them incentive to search for something else. ]

But with your travels, you should already know that a lunar pattern like this should be astrologically impossible. It seems deliberate, given the sudden appearance of those things.